Title :
Design and evaluation of two types of controllers for a two-switch forward converter with extended duty cycle capability
Author :
Salazar, Lautaro D. ; Ziogas, Phoivos D.
Author_Institution :
Dept. of Electr. & Comput. Eng., Concordia Univ., Montreal, Que., Canada
fDate :
4/1/1992 12:00:00 AM
Abstract :
A single-voltage loop and dual-current-voltage loop-control system are proposed to improve the output regulation and the dynamic response of a 2 kW two-switch high-frequency forward converter with an extended duty cycle capability. A design method in the frequency domain is described. It is shown that both control systems can be designed by using an equivalent single-input/output control transfer function. Moreover, an all-pass constant-time-delay filter is included in the transfer function of the converter to improve the linear model at high-frequency. Simulated and experimental results to verify the design and the effects on the dynamic performance of the converter using both controllers are presented
Keywords :
controllers; electric current control; power convertors; voltage control; voltage regulators; 2 kW; all-pass constant-time-delay filter; dual-current-voltage loop-control system; extended duty cycle capability; frequency domain; linear model; output regulation; single-input/output control transfer function; single-voltage loop control system; two-switch high-frequency forward converter; Circuit stability; Control systems; DC-DC power converters; Feedback loop; Filters; Hafnium; Impedance; Switches; Switching converters; Voltage control;
Journal_Title :
Industrial Electronics, IEEE Transactions on
